Games like Repel The Rifts
Games like Repel The Rifts include Into the Breach, FTL: Faster Than Light, BattleTech, Loop Hero, and Wall World. We matched them by the tags players give Repel The Rifts on Steam (Tower Defense, Roguelike, Mechs, Sci-fi, and Tactical): closest matches first, and among equally close ones the better-known games.

Into the Breach
Shared: Mechs · Roguelike · Strategy

FTL: Faster Than Light
Shared: Roguelike · Sci-fi · Space

BattleTech
Shared: Mechs · Sci-fi · Turn-Based

Loop Hero
Shared: Roguelike · Tactical · Roguelite

Wall World
Shared: Tower Defense · Roguelike · Roguelite

Dungeon of the ENDLESS™
Shared: Roguelike · Tower Defense · Sci-fi

Crying Suns
Shared: Roguelike · Sci-fi · Space

Dome Keeper
Shared: Roguelike · Sci-fi · Tower Defense

Balatro
Shared: Roguelike · Roguelite · Strategy

Tower Dominion
Shared: Tower Defense · Roguelike · Tactical

The King is Watching
Shared: Roguelike · Tower Defense · Roguelite

XCOM: Enemy Unknown
Shared: Tactical · Sci-fi · Turn-Based

STAR WARS Zero Company™
Shared: Sci-fi · Turn-Based Tactics · Tactical

The Last Spell
Shared: Tactical · Strategy · Turn-Based

Slay the Spire
Shared: Roguelike · Turn-Based · Roguelite

Star Renegades
Shared: Roguelike · Turn-Based · Roguelite

XCOM 2
Shared: Tactical · Sci-fi · Strategy

Peglin
Shared: Roguelike · Roguelite · Turn-Based

Darkest Dungeon® II
Shared: Roguelike · Roguelite · Turn-Based Tactics

Heat Signature
Shared: Roguelike · Space · Sci-fi

XCOM®: Chimera Squad
Shared: Turn-Based · Sci-fi · Turn-Based Tactics

Invisible, Inc.
Shared: Turn-Based Tactics · Sci-fi · Roguelite

Warhammer 40,000: Mechanicus
Shared: Sci-fi · Turn-Based Tactics · Turn-Based

Despot's Game: Dystopian Battle Simulator
Shared: Roguelike · Tactical · Pixel Graphics